Crossword clues for Difficult problems.:BEARDifficult problemRATSNESTDifficult problemTIGERTEAMSGroups of specialists that take on difficult problems, in corporate lingoKNOTSDifficult problemsPOSERDifficult problemSTUMPERDifficult problemNUTDifficult problemENSNARLINGInvolving in difficult problemsFACERSDifficult problems.LULUDifficult problem: Slang.STICKLERDifficult problemTOUGHDifficult, as a problemTHORNIESTMost difficult, as a problemTOUGHNUTProblem that's difficult to deal with